I'm a programmer that doesn't really understand anything about media streaming. What is a good use case for this project? I can't decipher it from the description. It can read and publish media streams. What does that do?
IP cameras generally stream through the Real time Streaming Protocol (RTSP). This cannot be directly played in the web and also requires authentication in most cases.
MediaMTX acts as a proxy to convert RTSP→WebRTC and take care of the authentication.